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Finding the Fourth Proportional to 735,128.70, 1,031,279.70 and 735,128.70

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Solution

The fourth proportional to 735,128.70, 1,031,279.70 and 735,128.70 is: 1,031,279.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    735,128.70 : 1,031,279.70 = 735,128.70 : x
  2. Step 2: Convert to fraction form
    735,128.70/1,031,279.70 = 735,128.70/x
  3. Step 3: Cross multiply
    735,128.70x = 1,031,279.70 × 735,128.70
  4. Step 4: Simplify right side
    735,128.70x = 758,123,305,197.39
  5. Step 5: Solve for x
    x = 758,123,305,197.39/735,128.70
  6. Step 6: Final answer
    x = 1,031,279.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.